Finding the Fourth Proportional to 73,860.57, 110,781.14 and 20,556.09
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Solution
The fourth proportional to 73,860.57, 110,781.14 and 20,556.09 is: 30,831.43
Step by Step Solution
- Step 1: Write the proportion equation
73,860.57 : 110,781.14 = 20,556.09 : x - Step 2: Convert to fraction form
73,860.57/110,781.14 = 20,556.09/x - Step 3: Cross multiply
73,860.57x = 110,781.14 × 20,556.09 - Step 4: Simplify right side
73,860.57x = 2,277,226,981.36 - Step 5: Solve for x
x = 2,277,226,981.36/73,860.57 - Step 6: Final answer
x = 30,831.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.